Solid-State Homojunction Organic Electrochemical Transistors for Flexible Bioelectronics and Logic Gates
발표자
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초록
내용
The fabrication of a solid-state homojunction OECT consisting of a pristine polymer semiconductor channel, doped polymer semiconductor electrodes, and a solid electrolyte is demonstrated. This structure combines the photo-crosslinking of all of the electronic OECT components with the selective doping of the polymer semiconductor. Three Lewis acids (gold (III) chloride (AuCl3), iron (III) chloride (FeCl3), and copper (II) chloride (CuCl2) ) are utilized as dopants for the metallization of the polymer semiconductor. The AuCl3-doped polymer semiconductor with an electrical conductivity of ≈100 S cm−1 is successfully employed as the source, drain, and gate electrodes for the OECT, which exhibited a high carrier mobility of 3.4 cm2 V−1 s−1 and excellent mechanical stability, with negligible degradation in device performance after 5000 cycles of folding at a radius of 0.1 mm. Homojunction OECTs are then successfully assembled to produce NOT, NAND, and NOR logic gates.